The facts
- Maker: SSEMCO.
- Locks at: the equipment inlet.
- Needs on the PDU side: nothing; the plug is a standard C14 / C20.
- Needs on the equipment side: any standard inlet (C13 / C15 / C19 connector).
- How it holds: SSEMCO's rotary lock: a quarter turn of the grey collar on the connector body drives internal pins that pinch the inlet's pins. Fits any standard C14 or C20 inlet; the PDU side does not matter. Made for full PDUs, where there is no room beside the connector to reach a tab. Rated 10 / 13 / 15 A (UL), 10 A (VDE), on the C13, C15 and C19 connector.
- How to release: Turn the grey collar back a quarter turn and pull.
- Published retention: no figure published by the maker.
- Plugs: C14, C20. Connectors: C13, C15, C19.
What it is
S-Lock is an equipment-side mechanism with a rotary collar. Push the connector onto any standard IEC inlet, turn the grey collar a quarter turn, and it is locked; turn it back to release. Because the release is a rotation rather than a squeeze, it needs no clearance to either side of the connector. That is what makes it the choice for high-density equipment where C14 inlets sit shoulder to shoulder.
What it fits
Any standard C14 or C20 inlet, on any equipment. The plug end is standard and does not lock: C14 or C20 for a PDU from stock; NEMA 5-15P, 5-20P and hospital-grade 5-15P builds to order. For a PDU end that locks as well, Dual-Lock pairs this connector with a P-Lock plug.
Release
Turn the grey collar a quarter turn and pull. One hand, no side clearance.
S-Lock or A-Lock?
Same inlets, same plugs, different release. A-Lock squeezes; S-Lock turns. Choose by the room around the inlet and by what your technicians' hands already know.